What caused the tubers to split? If the tubers froze, and that's what it sounds like, it is doubtful the plant will survive, but maybe...What color are the growing tips? If they are gray, or black they will not survive. If they are pale green they should be all right. Keep them in water with lots of sun and heat and you will know in a week or two. They will start growing in just a few days if they are healthy.